EP4281331B1 - Agencement de stockage d?énergie pour un véhicule automobile et véhicule automobile comprenant un tel agencement de stockage d?énergie - Google Patents

Agencement de stockage d?énergie pour un véhicule automobile et véhicule automobile comprenant un tel agencement de stockage d?énergie Download PDF

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Publication number
EP4281331B1
EP4281331B1 EP21819364.7A EP21819364A EP4281331B1 EP 4281331 B1 EP4281331 B1 EP 4281331B1 EP 21819364 A EP21819364 A EP 21819364A EP 4281331 B1 EP4281331 B1 EP 4281331B1
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EP
European Patent Office
Prior art keywords
energy storage
housing
pressure
storage arrangement
motor vehicle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP21819364.7A
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German (de)
English (en)
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EP4281331A1 (fr
Inventor
Oliver Stoll
Julius Rausch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Audi AG
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Audi AG
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Publication date
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Publication of EP4281331A1 publication Critical patent/EP4281331A1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R21/013—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/12—Arrangements or mounting of devices for preventing or minimising the effect of explosion ; Other safety measures
    • F17C13/123—Arrangements or mounting of devices for preventing or minimising the effect of explosion ; Other safety measures for gas bottles, cylinders or reservoirs for tank vehicles or for railway tank wagons

Definitions

  • the invention relates to an energy storage arrangement for a motor vehicle with a closed housing and at least one energy storage device arranged in the housing for storing fuel or electrical energy, as specified in the preamble of patent claim 1.
  • the invention further relates to a motor vehicle with such an energy storage arrangement.
  • An energy storage device in the sense of the invention in question is a device for storing fuel or for storing electrical energy for driving a motor vehicle.
  • the energy storage device(s) may be damaged or pre-damaged. Such damage or pre-damage is often not noticed or remains undetected and can then lead to subsequent damage.
  • the EN 60 2004 011 526 T2 describes a gas container containing a compressed flammable gas and provided with a safety relief device.
  • the safety relief device comprises a pressurized release hose which is connected to a danger area. A rupture of this release hose caused by a rise in temperature or mechanical damage leads to a drop in pressure, which triggers an emergency discharge of the pressurized flammable gas from the gas container.
  • the nearest EP 2 557 615 A1 describes a battery device for an automobile with a housing in which several battery cells are arranged. A pressure sensor is also arranged in the housing, which is connected to a control unit arranged outside the housing. If the battery device is deformed by a collision of the automobile, the pressure inside increases. This increase in pressure can be detected by the control unit using the pressure sensor and a protective measure can then be initiated.
  • the energy storage arrangement according to the invention of claim 1 enables reliable detection of a collision or the like that can lead to damage or pre-damage to the energy storage device, with a comparatively simple and cost-effective structure. At least one protective measure can then be initiated.
  • the invention also extends to a motor vehicle, in particular a passenger car or a light commercial vehicle, that has an energy storage arrangement according to the invention. Additional features of the invention arise analogously for both subject matters of the invention from the dependent claims, the following description of the invention (whereby this expressly also includes features that are described as "for example”, “preferred”, “in particular”, etc.) and the drawing.
  • the housing offers mechanical and, if necessary, thermal protection to the at least one energy storage device arranged therein. It is preferably provided that the housing together with the at least one energy storage device forms a structural unit that can be pre-assembled and then attached as a whole to the motor vehicle, in particular in the area of the body floor.
  • a collision-related force acting on the housing can lead to a housing deformation, whereby the pressure or internal pressure in the housing changes, in particular increases (peak), at least for a short time.
  • the evaluation device can evaluate the internal pressure in the housing, which is recorded using the pressure sensor, in particular continuously recorded. In the case of spontaneous or sudden pressure changes or fluctuations, the evaluation device can conclude (for example by comparing it with previously recorded pressure measurements and/or by observing a pressure change rate) that a collision-related force has acted on the housing (which may have led to a deformation of the housing or even to damage to the at least one energy storage device).
  • a detected pressure change can be characterized, for example based on the amplitude and/or the time course, and assigned to a specific class, in particular a specific collision intensity class or deformation class.
  • the evaluation device (or a vehicle control unit) can then at least one suitable Initiate or initiate protective measures (see below). This can be done both when the motor vehicle is in operation and when it is parked.
  • the housing, the pressure sensor and the evaluation device form a relatively simple monitoring system suitable for series production that can determine or detect possible damage to the housing and/or at least one energy storage device. Monitoring is carried out by sensing the pressure or internal pressure in the housing.
  • An energy storage device is preferably a pressure tank for storing fuel, preferably for storing hydrogen (H 2 ) for a hydrogen drive or for storing natural gas (CNG) for a natural gas drive, with operating pressures of up to 700 bar and more being provided.
  • An energy storage device can also be a battery module or the like for storing electrical energy for an electric drive.
  • several energy storage devices, in particular several pressure tanks or several battery modules, are arranged in the housing, which can be monitored together. This keeps the monitoring effort to a minimum. Furthermore, weight and costs can be saved.
  • the pressure sensor of the energy storage arrangement is designed to detect or measure the pressure (internal pressure) inside the housing and to generate corresponding pressure measurements, in particular in the form of electrical signals.
  • the pressure sensor can be arranged (directly) on the housing or in the housing.
  • the pressure sensor is preferably arranged away from or away from the housing and connected to the housing or its interior via a pressure line (ie the internal pressure is transmitted to the pressure sensor via a pressure line). This avoids sources of error that arise when the pressure sensor is arranged directly on or in the housing.
  • the pressure sensor can be arranged at a particularly protected location in the motor vehicle.
  • the pressure line is preferably designed as a pipe or hose.
  • the evaluation device of the energy storage arrangement according to the invention is preferably designed to automatically evaluate or analyze the measured values of the pressure sensor, in particular those which are continuously recorded, and in particular to initiate at least one protective measure if the evaluation detects inadmissible pressure changes or fluctuations in the internal pressure, which in particular exceed a certain threshold or tolerance value.
  • the recorded or measured pressure values can also be stored in the evaluation device for later evaluation.
  • the evaluation device is preferably a microelectronic device which can also be integrated in the vehicle control unit. The evaluation can be carried out using an algorithm, in particular a software-based one.
  • Possible protective measures include, for example, issuing a warning message to the driver (for example, "Visit a workshop urgently!), switching off the vehicle's drive, preventing a refueling or charging process, and the like.
  • a deformation clearance is provided in the housing between the energy storage device and a (lower) housing base.
  • the energy storage device is arranged above a deformation clearance above the housing base in order to prevent damage to the energy storage device in the event of a slight deformation of the housing base (e.g. as a result of a collision with a floor obstacle).
  • the deformation clearance can have a height in the range of 5 mm to 15 mm (in the z-direction).
  • the evaluation device is intended or designed to determine or be able to determine a collision-related impact of the housing base on the energy storage device by evaluating or evaluating the internal pressure detected by the pressure sensor.
  • the housing can have at least one pressure equalization valve which, for example when heated, ensures a slow pressure equalization between the interior of the housing or the interior of the housing and the environment.
  • the energy storage arrangement 100 has a closed box-like housing 110, in whose air-filled interior or housing interior 112 several pressure tanks 120 designed as tube storage are arranged. (Instead of pressure tanks, battery modules or the like can also be provided, as described above.) Between the pressure tanks 120 and the housing base 111 there is a deformation space 113 belonging to the interior 112. The housing 110 is sealed or hermetically sealed from the environment. A pressure equalization valve 114 is arranged at a suitable point in the housing wall, which ensures a slow pressure equalization with the environment.
  • the housing 110 with the pressure tanks 120 is arranged, for example, on or in the body floor of a motor vehicle.
  • the energy storage arrangement 100 also includes a pressure sensor 130, which is intended to detect the internal pressure p in the housing 110, i.e. the air pressure in the interior 112.
  • the pressure sensor 130 is arranged away from the housing 110 and is connected to the housing 110 or its interior 112 via a pressure line 140.
  • the energy storage arrangement 100 also includes an evaluation device 150 connected to the pressure sensor 130.
  • the pressure sensor 130 can be connected to the evaluation device 150 via a vehicle-side bus system, for example a CAN bus.
  • the evaluation device 150 is intended to determine a collision-related force F on the housing 110 by evaluating or analyzing the internal pressure p detected by the pressure sensor 130 and to determine a collision-related impact of the housing base 111 on the pressure tanks 120 (as indicated by dashed lines), ie to determine when the deformation space 113 is virtually used up.
  • the force F can occur from below as shown (most relevant case) or from another direction.
  • at least one suitable protective measure can then be initiated, as described above.
  • Fig. 2a shows a possible pressure curve p (t) as a result of a collision-related force F acting on the housing 110 without the housing base 111 striking one of the pressure tanks 120. The formation of a short-term pressure peak can be clearly seen here.
  • FIG. 2b illustrates a pressure curve p (t) with a "hard” impact of the housing base 111 on at least one of the pressure tanks 120.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)

Claims (8)

  1. Agencement de stockage d'énergie (100) pour un véhicule automobile, comprenant :
    - un boîtier (110) fermé ;
    - au moins un dispositif de stockage d'énergie (120) agencé dans le boîtier (110) pour le stockage de combustible ou d'énergie électrique ;
    - un capteur de pression (130) qui est prévu afin de détecter la pression interne (p) dans le boîtier (110) ;
    - un dispositif d'évaluation (150) qui est prévu afin de déterminer une action de force (F) due à la collision sur le boîtier (110) en évaluant la pression interne (p) détectée à l'aide du capteur de pression (130),
    caractérisé en ce que
    un espace libre de déformation (113) est prévu dans le boîtier (110) entre le dispositif de stockage d'énergie (120) et un fond de boîtier (111), dans lequel le dispositif d'évaluation (150) est réalisé afin de déterminer un impact du à la collision du fond de boîtier (111) contre le dispositif de stockage d'énergie (120) en évaluant la pression interne (p) détectée à l'aide du capteur de pression (130).
  2. Agencement de stockage d'énergie (100) selon la revendication 1,
    caractérisé en ce que
    le capteur de pression (130) est agencé à distance du boîtier (110) et est relié au boîtier (110) par le biais d'une conduite de pression (140).
  3. Agencement de stockage d'énergie (100) selon la revendication 1 ou 2,
    caractérisé en ce que
    l'espace libre de déformation (113) présente une hauteur dans la plage de 5 mm à 15 mm.
  4. Agencement de stockage d'énergie (100) selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    le boîtier (110) présente une soupape de compensation de pression (114).
  5. Agencement de stockage d'énergie (100) selon l'une quelconque des revendications précédentes 1 à 4,
    caractérisé en ce que
    l'agencement de stockage d'énergie (120) est un réservoir sous pression.
  6. Agencement de stockage d'énergie (100) selon l'une quelconque des revendications précédentes 1 à 4,
    caractérisé en ce que
    le dispositif de stockage d'énergie est un module de batterie.
  7. Véhicule automobile avec un agencement de stockage d'énergie (100) selon l'une quelconque des revendications précédentes.
  8. Véhicule automobile selon la revendication 7,
    caractérisé en ce que
    le boîtier (110) de l'agencement de stockage d'énergie (100) est agencé dans la zone d'un plancher de carrosserie du véhicule automobile.
EP21819364.7A 2021-01-21 2021-11-22 Agencement de stockage d?énergie pour un véhicule automobile et véhicule automobile comprenant un tel agencement de stockage d?énergie Active EP4281331B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102021101203.1A DE102021101203B3 (de) 2021-01-21 2021-01-21 Energiespeicheranordnung für ein Kraftfahrzeug und Kraftfahrzeug mit einer solchen Energiespeicheranordnung
PCT/EP2021/082410 WO2022156936A1 (fr) 2021-01-21 2021-11-22 Agencement de stockage d'énergie pour un véhicule automobile et véhicule automobile comprenant un tel agencement de stockage d'énergie

Publications (2)

Publication Number Publication Date
EP4281331A1 EP4281331A1 (fr) 2023-11-29
EP4281331B1 true EP4281331B1 (fr) 2024-05-29

Family

ID=78821159

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21819364.7A Active EP4281331B1 (fr) 2021-01-21 2021-11-22 Agencement de stockage d?énergie pour un véhicule automobile et véhicule automobile comprenant un tel agencement de stockage d?énergie

Country Status (3)

Country Link
EP (1) EP4281331B1 (fr)
DE (1) DE102021101203B3 (fr)
WO (1) WO2022156936A1 (fr)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2299797T3 (es) 2004-11-04 2008-06-01 Luxembourg Patent Company S.A. Deposito de gas con un tubo flexible a su alrededor para la descarga de gas en caso de temperatura demasiado elevada o daños mecanicos.
CN100419335C (zh) 2006-12-25 2008-09-17 浙江大学 氢安全保障报警装置
JP5886760B2 (ja) * 2010-01-14 2016-03-16 インテグリス・インコーポレーテッド 換気ガス管理システムおよびプロセス
KR101353906B1 (ko) 2011-08-05 2014-01-22 김학성 배출관 케이스가 결합된 차량용 내압용기 가스감지장치
EP2557615B1 (fr) * 2011-08-11 2017-02-08 Autoliv Development AB Bloc-batterie pour véhicule
DE102013206508A1 (de) * 2013-04-12 2014-10-16 Robert Bosch Gmbh Steuervorrichtung für eine Objektankopplungsvorrichtung eines Fahrzeugs, Objektankopplungsvorrichtung für ein Fahrzeug und Verfahren zum Dämpfen eines Aufpralls eines trägheitsbeschleunigten Objekts

Also Published As

Publication number Publication date
EP4281331A1 (fr) 2023-11-29
WO2022156936A1 (fr) 2022-07-28
DE102021101203B3 (de) 2022-03-31

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